43243683840 has 1200 divisors, whose sum is σ = 190310736000. Its totient is φ = 9364045824.

The previous prime is 43243683829. The next prime is 43243683871. The reversal of 43243683840 is 4838634234.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2275983351 + ... + 2275983369.

It is an arithmetic number, because the mean of its divisors is an integer number (158592280).

Almost surely, 2^43243683840 is an apocalyptic number.

43243683840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43243683840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95155368000).

43243683840 is an abundant number, since it is smaller than the sum of its proper divisors (147067052160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43243683840 is an frugal number, since it uses more digits than its factorization.

43243683840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 45.

The spelling of 43243683840 in words is "forty-three billion, two hundred forty-three million, six hundred eighty-three thousand, eight hundred forty".